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The modified-bitumen sheets feature UltraWhite™ roofing granules, which provide a granule-surfaced, cool-roofing solution that enhances light reflectivity and heat emissivity, reducing energy use and electricity demand in the building. The granules are applied before the cap sheets are installed, eliminating the need for field-applied systems that increase labor costs and can crack or peel. The cap sheets resist foot traffic and hail, effectively retain granules, and do not have metal or plastic film added to the surface, which eliminates potential wrinkling and delaminating.